CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total		Common Stock	Additional Paid-in Capital	Company Common Stock Held By The NQDC	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning Balance at Dec. 31, 2015						$ 21,033
Net loss	$ (83,051)
Ending Balance at Mar. 31, 2016						47
Beginning Balance at Dec. 31, 2016	2,766,275	[1]	$ 173	$ 4,288,113	$ (14,321)	12,816	$ (1,520,506)
Beginning Balance (in shares) at Dec. 31, 2016			172,648
Net loss	(16,290)						(16,290)
Other comprehensive loss	(7,796)					(7,796)
Issuances under equity incentive plans, net of tax	(4,849)			(4,849)
Issuances under equity incentive plans, net of tax (in share)			656
Conversion of convertible notes, net	6			6
Common stock held by NQDC	218				218
Stock-based compensation	31,523			31,523
Ending Balance at Mar. 31, 2017	$ 2,769,087		$ 173	$ 4,314,793	$ (14,103)	$ 5,020	$ (1,536,796)
Ending Balance (in shares) at Mar. 31, 2017			173,304

[1] December 31, 2016 balances were derived from the audited Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016, filed with the Securities and Exchange Commission (the SEC) on February 27, 2017.